Öz
In this study, determination of characteristics some properties of beverages produced by fermentation of buttermilk by different microorganisms was aimed. After heat treatment was carried out by adding different amounts of raw milk (0, 25, 50, 75, 100 %) to 10 % of buttermilk solution, L. acidophilus (LA) culture and L. acidophilus, Bifidobacteria and S. thermophilus mixed culture (ABT) were added to samples and incubated at 37°C to a pH of about 4.8. Physicochemical and sensory properties and volatile compounds of the products were determined during storage. As the amount of milk by-products decreased, the fat, dry matter and protein ratios increased in buttermilk beverages. Volatile compounds in the samples were determined by using gas chromatography mass spectrometry. The volatile compounds determined in all samples were acetone, 2,3-butanedione, acetoin, toluene, 2-heptanone, limonene, eucalyptol, acetic acid and butanoic acid. The terms cooked, creamy, dairy/milky, fermented, cardboard, algae, soapy, warehouse, sweet, salty, astringent, and bitter in probiotic beverages were determined as a result of sensory evaluation.